With the booming development of the Internet and mobile Internet to the extent that it is almost ubiquitous,
all aspects of people’s daily life also show a scene of deep integration of online and offline.

Many services, whether online or offline, serve people. How to quickly, accurately, safely and efficiently determine a person’s identity,
so as to quickly link personalized services, is an important area in the field of identity recognition that has been impro in the past,
now and in the future.

Traditional identity authentication is based on various types of documents. With the rise of the Internet and smart phones, the identity
authentication industry has developed various electronic-based identity recognition and authentication schemes. Such as SMS
authentication code, dynamic port token, USBKEY of various interfaces, various ID cards, etc., as well as fingerprint authentication, face
recognition, iris recognition, etc. that have emerged in recent years.